CN212226099U

CN212226099U - Start-stop device for high-pressure cleaning machine

Info

Publication number: CN212226099U
Application number: CN202020595726.5U
Authority: CN
Inventors: 黄新
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-20
Filing date: 2020-04-20
Publication date: 2020-12-25
Anticipated expiration: 2030-04-20

Abstract

The utility model provides a high pressure cleaner opens with stopping device belongs to high pressure cleaner technical field. It has solved the current short problem of life who stops the device. This high pressure cleaner opens and stops device, including the valve body that has well cavity, set up the guiding hole of well cavity in the intercommunication on the inlet opening of cavity in the intercommunication, another terminal surface on the terminal surface of valve body, set up the valve rod subassembly in the valve body, well cavity includes the sealed chamber that sets up along the axial of valve body, and the valve rod subassembly includes ejector pin and valve block, and the valve block is located sealed intracavity and can follow the axial slip of sealed chamber, and the one end of ejector pin is leaned on with a terminal surface counterbalance of valve block, the other end is worn to establish in the guiding hole, and the cover is equipped with the spring that makes the ejector pin have towards the inlet opening direction removal trend all the time. This structure improves and stops reducing the manufacturing degree of difficulty of valve rod when opening the life who stops the device.

Description

Start-stop device for high-pressure cleaning machine

Technical Field

The utility model belongs to the technical field of high pressure cleaner, a high pressure cleaner is with opening stop device is related to.

Background

The high-pressure cleaning machine is a machine which enables a high-pressure plunger pump to generate high-pressure water through a power device to wash the surface of an object, and can peel off and wash away dirt so as to achieve the purpose of cleaning the surface of the object. The traditional high-pressure cleaning machine mainly comprises a spray gun and a plunger type water pump, wherein the on-off control of the spray gun and the on-off control of a water pump power supply are mutually independent, the opening and closing of the spray gun are controlled by a trigger, and the starting and closing of the water pump power supply are controlled by a microswitch arranged in the water pump; when the trigger of the spray gun is pulled again, the spray gun sprays water outwards, so that the water pressure in the spray gun is reduced, the ejector rod moves back to reset, the microswitch is loosened, and the water pump is restarted.

At present, chinese patent network discloses a high pressure cleaner gun stop device [ application publication No.: CN105435986A disclosure, which includes a plunger pump body, the plunger pump body is connected with a water outlet three-way joint, the water outlet three-way joint is provided with a stroke hole, the connecting seat is connected with the stroke hole, the connecting seat is provided with a movable hole communicated with the stroke hole, one end of the connecting seat is connected with a micro switch box, a micro switch is arranged in the micro switch box, a push rod is arranged in the stroke hole, one end of the push rod passes through the movable hole and is exposed outside the connecting seat, an opening and closing spring capable of making the push rod perform reciprocating movement is arranged in the stroke hole, the push rod comprises a rod seat and a rod body connected with the rod seat, the diameter of the rod seat is larger than that of the rod body, the opening and closing spring is sleeved outside the rod body, an annular groove is arranged on the.

When high pressure cleaner was when the use, high pressure cleaner output high pressure water, foretell pole body and pole socket be integrated into one piece structure, and the external diameter of pole socket is greater than the external diameter of pole body, and in the manufacturing process, very high concentricity is hardly guaranteed to pole body and pole socket, and the ejector pin can have following problem in the use: 1. when the spring force acts on the rod seat, the stress of the rod seat is uneven, and after high-pressure water enters the stroke hole and acts on the end face of the rod seat, the high-pressure water pushes the ejector rod to move against the acting force of the spring, so that the ejector rod integrally inclines to a certain degree; 2. when the water pressure of the high-pressure water is reduced, the spring pushes the ejector rod to move back for resetting, and the whole ejector rod is also inclined to a certain degree due to uneven stress of the rod seat; 3. go out water three way connection and connecting seat and generally adopt threaded connection, go out water three way connection and connecting seat and also hardly guarantee higher concentricity, the ejector pin is installed on water three way connection and connecting seat back, and the higher concentricity also hardly is guaranteed to the terminal surface of rod seat and the inlet opening of water under high pressure, and the water under high pressure enters into the in-process of stroke downthehole and promotion ejector pin from the inlet opening, and the whole slope that takes place certain degree of ejector pin.

Therefore, in the process of reciprocating movement of the ejector rod, the ejector rod can incline to a certain degree, the peripheral surface of the rod seat is seriously rubbed with the hole wall of the stroke hole, the rod seat is extremely easy to wear, and the sealing ring on the rod seat is excessively rubbed with the hole wall of the stroke hole, so that the sealing ring is extremely easy to damage, and the service life of the gun closing stopping device is shortened.

Disclosure of Invention

The utility model aims at having the above-mentioned problem to current technique, provided a high pressure cleaner with opening and stop device, the utility model aims to solve the technical problem that: how to improve and stop the manufacturing degree of difficulty of reducing the valve rod when the life of device.

The purpose of the utility model can be realized by the following technical proposal:

the utility model provides a high pressure cleaner opens and stops device, is including the valve body that has well cavity, set up the guiding hole of cavity in the intercommunication on the inlet opening of cavity, the other terminal surface in the intercommunication on the terminal surface of valve body, be provided with the valve rod subassembly in the valve body, well cavity includes the sealed chamber that sets up along the axial of valve body, a serial communication port, the valve rod subassembly includes ejector pin and valve block, the valve block is located sealed intracavity and can follows the endwise slip in sealed chamber, the one end of ejector pin offsets with the terminal surface of valve block and leans on, the other end wears to establish in the guiding hole, the cover is equipped with the spring that makes the ejector pin have towards the inlet opening direction removal trend all the time on the ejector pin.

The push rod and the valve block in the start-stop device are of a split structure, when water enters, the valve block is pushed by high-pressure water to move along the axial direction of the sealing cavity, the valve block pushes the push rod to move along the axial direction of the valve body, the push rod further moves along the axial direction of the valve body, and at the moment, the spring is compressed; when the water pressure is reduced, the ejector rod moves along the axial direction of the valve body under the action of the spring to reset, the ejector rod pushes the valve block to move along the axial direction of the valve body to reset, although the ejector rod is stressed unevenly, the ejector rod and the valve block are separated, the ejector rod is in surface contact with the valve block, and the valve block is stressed evenly under the lifting action of the ejector rod, so that the valve block cannot deviate or incline in the axial movement process along the sealing cavity, the situation that sealing rings on the valve block and the valve block are seriously worn is avoided, the service life of the valve block is prolonged, and the service life of the start-stop device is prolonged; in addition, the ejector rod and the valve block do not need to guarantee higher concentricity, so that the processing difficulty of the valve rod assembly is reduced, the ejector rod and the valve block are split, the ejector rod and the valve block can be separately processed, and the convenience in processing and manufacturing the valve rod assembly is improved.

In the start-stop device for the high-pressure cleaning machine, the valve rod assembly further comprises a support table located between the ejector rod and the valve block, one end of the ejector rod is connected with the support table, one surface of the support table abuts against one end face of the valve block, one end of the spring abuts against the support table, and the other end of the spring abuts against the valve body. Through the setting of this structure, a supporting bench is integrative with the ejector pin, and the area of contact of ejector pin and valve block is improved on the one hand in the setting of a supporting bench for the whole atress of valve block is even, improves the valve block along the axial displacement's of sealed chamber stability, and in addition, the power of spring is used in a supporting bench, drives the ejector pin through a supporting bench and moves.

In the start-stop device for the high pressure washer, the outer diameter of the support table is larger than the outer diameter of the valve block. Through the setting of this structure, further improve the area of contact of brace table and valve block, guarantee that the whole atress all the time of valve block is even, further improve the valve block along seal chamber's axial displacement's stability.

In the start-stop device for the high-pressure cleaning machine, the hollow cavity comprises a stroke cavity adjacent to the sealing cavity, the stroke cavity comprises an upper limiting surface and a lower limiting surface, and the support table is located in the stroke cavity and can slide along the axial direction of the valve body. Through the setting of this structure, the axial reciprocating motion of brace table in the stroke intracavity along the valve body goes up spacing face and plays spacing effect to the stroke of brace table respectively down, avoids the outside extension length overlength of ejector pin to cause the damage to the water pump switch on the high pressure cleaner.

In the start-stop device for the high-pressure cleaning machine, the hollow cavity further comprises a spring cavity adjacent to the stroke cavity, the spring and the ejector rod are at least partially located in the spring cavity, and the valve body is provided with an exhaust hole communicated with the spring cavity. Through the setting of this structure, when the brace table was at the axial reciprocating motion of stroke intracavity along the valve body, at the in-process that the spring compressed, the air of stroke intracavity was outwards discharged from the exhaust hole, at the in-process that the spring reset, the air in the external world entered into the stroke intracavity through the exhaust hole, and the setting in exhaust hole makes the brace table can smoothly go on along the axial reciprocating motion of valve body in the stroke intracavity.

In foretell high pressure cleaner opens and stops device, inhalant canal one and inhalant canal two that the axial that has in the valve body set up along the valve body, the one end and the inlet opening of inhalant canal one are linked together, the other end and inhalant canal two phase intercommunication, the one end and the sealed chamber of inhalant canal two are linked together, the internal diameter of inhalant canal one is less than the internal diameter of inhalant canal two, the inlet opening is the toper, the internal diameter of inhalant canal one equals with the minimum internal diameter of inlet opening. Through the setting of this structure, the water under high pressure loops through the inlet opening, inlet channel one and inlet channel two enter into the seal chamber and promote the valve block and remove, the inlet opening is the toper and makes the pore wall of inlet opening can play the effect that blocks to the water under high pressure, reduce the energy of water under high pressure, and then reduce the water pressure of the water under high pressure that enters into inlet channel one, water under high pressure in the inlet channel one enters into inlet channel two, because the internal diameter of inlet channel two is greater than the internal diameter of inlet channel one, inlet channel two can't be filled up by water under high pressure once, slowly fill up by water under high pressure in the inlet channel two, inlet channel two plays the effect of a pressure cushion chamber, make the pressure that is used in on the valve block grow gradually, avoid the valve block atress too big in the twinkling of an eye.

In the start-stop device for the high-pressure cleaning machine, the valve body comprises an upper valve body and a lower valve body, and the upper valve body is in threaded connection with the lower valve body. Through the arrangement of the structure, the valve body is convenient and quick to assemble.

Compared with the prior art, the utility model discloses a high pressure cleaner opens with stopping the device and has following advantage:

1. when water pressure reduces the back, the ejector pin resets along the axial displacement of valve body under the effect of spring, the ejector pin promotes the axial displacement of valve block along the valve body and resets, though the ejector pin atress is uneven, but because ejector pin and valve block are the components of a whole that can function independently, the ejector pin is face contact with the valve block, the atress is even under the lift of ejector pin for the valve block, consequently skew or slope can not take place at the axial displacement's of following the seal chamber in-process for the valve block, avoided the equal serious condition of wearing and tearing of the sealing washer on valve block and the valve block to take place, the life of valve block has been improved, and then the life who opens and stop the device has been improved.

2. Because ejector pin and valve block need not to guarantee higher concentricity, have reduced valve rod assembly's the processing degree of difficulty, ejector pin and valve block are split type moreover, can process ejector pin and valve block alone respectively, have improved valve rod assembly manufacturing's convenience.

Drawings

Fig. 1 is a schematic sectional structure of the present invention.

Fig. 2 is a schematic diagram of the explosion structure of the present invention.

Fig. 3 is one of the schematic three-dimensional structures of the present invention.

Fig. 4 is a second schematic perspective view of the present invention.

Fig. 5 is a schematic sectional structure view of the valve body of the present invention.

In the figure, 1, a valve body; 1a, an upper valve body; 1b, a lower valve body; 10. a hollow cavity; 101. sealing the cavity; 102. a stroke chamber; 102a, an upper limiting surface; 102b, a lower limiting surface; 103. a spring cavity; 104. a first water inlet channel; 105. a water inlet channel II; 11. a water inlet hole; 12. a guide hole; 13. an exhaust hole; 2. a valve stem assembly; 21. a top rod; 22. a valve block; 23. a support table; 3. a spring.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, fig. 2 and fig. 5, the start/stop device for the high pressure cleaning machine comprises a valve body 1 with a hollow cavity 10, the valve body 1 comprises an upper valve body 1a and a lower valve body 1b, the upper valve body 1a is in threaded connection with the lower valve body 1b, one end surface of the valve body 1 is provided with a water inlet 11 communicated with the hollow cavity 10, the other end surface is provided with a guide hole 12 communicated with the hollow cavity 10, a valve rod assembly 2 is arranged in the valve body 1, the hollow cavity 10 comprises a sealing cavity 101 arranged along the axial direction of the valve body 1, the valve rod assembly 2 comprises a push rod 21 and a valve block 22, the valve block 22 is arranged in the sealing cavity 101 and can slide along the axial direction of the sealing cavity 101, one end of the push rod 21 abuts against one end surface of the valve block 22, the other end is arranged in the guide hole 12 in a penetrating manner, the push rod 21 is sleeved with a spring 3, the valve rod assembly 2 further comprises a support table, one end of the ejector rod 21 is connected with a support table 23, one surface of the support table 23 abuts against one end surface of the valve block 22, one end of the spring 3 abuts against the support table 23, and the other end abuts against the valve body 1. The ejector rod 21 and the valve block 22 in the start-stop device are of a split structure, high-pressure water enters the sealed cavity 101 from the water inlet hole 11, the high-pressure water pushes the valve block 22 to move along the axial direction of the sealed cavity 101, the valve block 21 pushes the support table 23 and the ejector rod 21 to move along the axial direction of the valve body 1, and at the moment, the spring 3 is compressed; after the water pressure is reduced, the support table 23 and the ejector rod 21 move along the axial direction of the valve body 1 under the action of the spring 3 to reset, the support table 23 pushes the valve block 22 to move along the axial direction of the valve body 1 to reset, although the spring force applied to the support table 23 is not uniform, because the support table 23 and the ejector rod 21 are separated from the valve block 22, the support table 23 is in surface contact with the valve block 22, and the valve block 22 is uniformly stressed under the lifting of the support table 23, so that the valve block 22 cannot deviate or incline in the process of moving along the axial direction of the seal cavity 101, the occurrence of the situation that the seal rings on the valve block 22 and the valve block 22 are seriously worn is avoided, and the service life of the valve block 22 is prolonged; in addition, because the supporting table 23, the ejector rod 21 and the valve block 22 do not need to guarantee higher concentricity, the processing difficulty of the valve rod assembly 2 is reduced, and the supporting table 23, the ejector rod 21 and the valve block 22 are split, so that the supporting table 23 and the ejector rod 21 can be separately processed, and the valve block 22 is separately processed in addition, so that the processing and manufacturing convenience of the valve rod assembly 2 is improved.

As shown in fig. 1, the hollow chamber 10 includes a stroke chamber 102 adjacent to the seal chamber 101, the stroke chamber 102 includes an upper limit surface 102a and a lower limit surface 102b, and the support table 23 is located in the stroke chamber 102 and is capable of sliding in the axial direction of the valve body 1. The supporting table 23 reciprocates along the axial direction of the valve body 1 in the stroke cavity 102, and the upper limiting surface 102a and the lower limiting surface 102b respectively play a limiting role in the stroke of the supporting table 23, so that the water pump switch on the high-pressure cleaning machine is prevented from being damaged due to the fact that the ejector rod 21 extends outwards for too long.

As shown in fig. 1, the hollow cavity 10 further includes a spring cavity 103 adjacent to the stroke cavity 102, the spring 3 and the plunger 21 are both at least partially located in the spring cavity 103, and the valve body 1 is provided with an exhaust hole 13 communicated with the spring cavity 103. When the support table 23 reciprocates along the axial direction of the valve body 1 in the stroke cavity 102, in the process that the spring 3 is compressed, air in the stroke cavity 102 is discharged from the exhaust hole 13, in the process that the spring 3 is reset, outside air enters the stroke cavity 102 through the exhaust hole 13, and the arrangement of the exhaust hole 13 enables the support table 23 to reciprocate smoothly along the axial direction of the valve body 1 in the stroke cavity 102.

As shown in fig. 1, 3 and 4, a first water inlet channel 104 and a second water inlet channel 105 are arranged in the valve body 1 along the axial direction of the valve body 1, one end of the first water inlet channel 104 is communicated with the water inlet hole 11, the other end of the first water inlet channel is communicated with the second water inlet channel 105, one end of the second water inlet channel 105 is communicated with the sealed cavity 101, the inner diameter of the first water inlet channel 104 is smaller than the inner diameter of the second water inlet channel 105, the water inlet hole 11 is conical, and the inner diameter of the first water inlet channel 104 is equal to the minimum inner diameter of the water inlet hole 11. High-pressure water loops through inlet opening 11, inlet channel one 104 and inlet channel two 105 enter into seal chamber 101 and promote valve block 22 to remove, inlet opening 11 is the toper and makes the pore wall of inlet opening 11 can play the effect of blockking to high-pressure water, reduce the energy of high-pressure water, and then reduce the water pressure of the high-pressure water that enters into inlet channel one 104, the internal diameter of inlet channel one 104 is less, further play the effect of decompression, high-pressure water in inlet channel one 104 enters into inlet channel two 105, because the internal diameter of inlet channel two 105 is greater than the internal diameter of inlet channel one 104, inlet channel two 105 can't be filled up by high-pressure water once, slowly filled up by high-pressure water in inlet channel two 105, inlet channel two 105 plays the effect of a pressure buffer chamber, make the pressure that acts on valve block 22 grow gradually, avoid valve block 22 to receive the excessive force in the twinkling of an eye.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A start-stop device for a high-pressure cleaning machine comprises a valve body (1) with a hollow cavity (10), one end face of the valve body (1) is provided with a water inlet hole (11) communicated with the hollow cavity (10), the other end face is provided with a guide hole (12) communicated with the hollow cavity (10), a valve rod assembly (2) is arranged in the valve body (1), the hollow cavity (10) comprises a sealing cavity (101) which is arranged along the axial direction of the valve body (1), characterized in that the valve rod component (2) comprises a mandril (21) and a valve block (22), the valve block (22) is positioned in the seal cavity (101) and can slide along the axial direction of the seal cavity (101), one end of the ejector rod (21) is abutted against one end face of the valve block (22), the other end of the ejector rod is arranged in the guide hole (12) in a penetrating way, the ejector rod (21) is sleeved with a spring (3) which enables the ejector rod (21) to always have a trend of moving towards the direction of the water inlet hole (11).

2. The start-stop device for the high-pressure cleaning machine according to claim 1, wherein the valve rod assembly (2) further comprises a support table (23) located between the ejector rod (21) and the valve block (22), one end of the ejector rod (21) is connected with the support table (23), one surface of the support table (23) abuts against one end face of the valve block (22), one end of the spring (3) abuts against the support table (23), and the other end of the spring abuts against the valve body (1).

3. Start-stop device for a high-pressure washer according to claim 2, characterized in that the support table (23) has an outer diameter which is larger than the outer diameter of the valve block (22).

4. The start-stop device for the high-pressure cleaning machine is characterized in that the hollow cavity (10) comprises a stroke cavity (102) adjacent to the sealing cavity (101), the stroke cavity (102) comprises an upper limiting surface (102a) and a lower limiting surface (102b), and the supporting platform (23) is located in the stroke cavity (102) and can slide along the axial direction of the valve body (1).

5. The start-stop device for the high-pressure cleaning machine according to claim 4, wherein the hollow cavity (10) further comprises a spring cavity (103) adjacent to the stroke cavity (102), the spring (3) and the ejector rod (21) are both at least partially located in the spring cavity (103), and the valve body (1) is provided with an exhaust hole (13) communicated with the spring cavity (103).

6. The start-stop device for the high-pressure cleaning machine is characterized in that a first water inlet channel (104) and a second water inlet channel (105) are arranged in the valve body (1) along the axial direction of the valve body (1), one end of the first water inlet channel (104) is communicated with a water inlet hole (11), the other end of the first water inlet channel is communicated with the second water inlet channel (105), one end of the second water inlet channel (105) is communicated with a sealing cavity (101), the inner diameter of the first water inlet channel (104) is smaller than that of the second water inlet channel (105), the water inlet hole (11) is conical, and the inner diameter of the first water inlet channel (104) is equal to the minimum inner diameter of the water inlet hole (11).

7. The start-stop device for the high-pressure cleaning machine according to any one of claims 1 to 5, characterized in that the valve body (1) comprises an upper valve body (1a) and a lower valve body (1b), and the upper valve body (1a) and the lower valve body (1b) are in threaded connection.